Explain this to me

This table contains stats for heroes' picks and bans.
Rank is used to sort heroes by winrate, taking number of their picks and bans into account. Higher rank means the hero is stronger. Rev-Rank (Reverse Rank) is used to show the least effective heroes with the most number of matches.
Balance metric estimates how balanced the meta is (0 to 100)

Median hero picks (mp): 3 - Median hero bans (mb): 4 - Matches: 49

Remove low picks (0.9mp) Remove low bans (0.9mb)

Balance rank	Winrate	Pickrate	Contest Rate
59.6	77.6	40.7	43.4

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Troll Warlord	25	51.02%	100.00	55.79	13	76.92%	4.3	12	58.33%	3.0
Lifestealer	18	36.73%	98.95	27.37	7	85.71%	2.3	11	63.64%	2.8
Disruptor	24	48.98%	97.89	57.89	13	76.92%	4.3	11	54.55%	2.8
Clockwerk	43	87.76%	96.84	83.16	9	55.56%	3.0	34	58.82%	8.5
Queen of Pain	39	79.59%	95.79	81.05	29	62.07%	9.7	10	30.00%	2.5
Puck	38	77.55%	94.74	80.00	13	53.85%	4.3	25	60.00%	6.3
Nyx Assassin	39	79.59%	93.68	86.32	13	69.23%	4.3	26	42.31%	6.5
Treant Protector	16	32.65%	92.63	46.32	10	70.00%	3.3	6	66.67%	1.5
Night Stalker	48	97.96%	91.58	97.89	21	52.38%	7.0	27	40.74%	6.8
Magnus	12	24.49%	90.53	41.05	7	71.43%	2.3	5	60.00%	1.3
Vengeful Spirit	6	12.24%	89.47	12.63	5	80.00%	1.7	1	100.00%	0.3
Nature's Prophet	26	53.06%	88.42	77.89	8	75.00%	2.7	18	33.33%	4.5
Dark Seer	32	65.31%	87.37	90.53	15	60.00%	5.0	17	29.41%	4.3
Legion Commander	22	44.90%	86.32	73.68	14	50.00%	4.7	8	62.50%	2.0
Bristleback	18	36.73%	85.26	67.37	5	20.00%	1.7	13	84.62%	3.3
Dragon Knight	21	42.86%	84.21	71.58	7	42.86%	2.3	14	64.29%	3.5
Lycan	31	63.27%	83.16	91.58	12	41.67%	4.0	19	52.63%	4.8
Venomancer	28	57.14%	82.11	89.47	14	42.86%	4.7	14	57.14%	3.5
Sand King	35	71.43%	81.05	95.79	19	31.58%	6.3	16	68.75%	4.0
Io	25	51.02%	80.00	85.26	4	50.00%	1.3	21	47.62%	5.3
Zeus	3	6.12%	78.95	7.37	2	100.00%	0.7	1	100.00%	0.3
Ancient Apparition	28	57.14%	77.89	92.63	14	50.00%	4.7	14	35.71%	3.5
Tidehunter	5	10.20%	76.84	13.68	4	75.00%	1.3	1	100.00%	0.3
Faceless Void	18	36.73%	75.79	72.63	10	60.00%	3.3	8	25.00%	2.0
Outworld Destroyer	8	16.33%	74.74	25.26	4	75.00%	1.3	4	50.00%	1.0
Templar Assassin	16	32.65%	73.68	70.53	6	33.33%	2.0	10	70.00%	2.5
Beastmaster	9	18.37%	72.63	43.16	4	75.00%	1.3	5	40.00%	1.3
Lina	12	24.49%	71.58	64.21	5	40.00%	1.7	7	71.43%	1.8
Batrider	28	57.14%	70.53	96.84	8	37.50%	2.7	20	40.00%	5.0
Necrophos	7	14.29%	69.47	26.32	4	75.00%	1.3	3	33.33%	0.8
Silencer	15	30.61%	68.42	75.79	11	45.45%	3.7	4	50.00%	1.0
Spirit Breaker	9	18.37%	67.37	52.63	5	80.00%	1.7	4	0.00%	1.0
Jakiro	18	36.73%	66.32	87.37	12	41.67%	4.0	6	50.00%	1.5
Weaver	2	4.08%	65.26	2.11	2	100.00%	0.7	0	0.00%	0.0
Ember Spirit	8	16.33%	64.21	44.21	4	75.00%	1.3	4	25.00%	1.0
Shadow Fiend	9	18.37%	63.16	60.00	6	50.00%	2.0	3	66.67%	0.8
Tiny	4	8.16%	62.11	16.84	3	66.67%	1.0	1	100.00%	0.3
Crystal Maiden	4	8.16%	62.11	16.84	3	66.67%	1.0	1	100.00%	0.3
Skywrath Mage	4	8.16%	62.11	16.84	3	66.67%	1.0	1	100.00%	0.3
Rubick	16	32.65%	58.95	88.42	12	33.33%	4.0	4	75.00%	1.0
Bounty Hunter	3	6.12%	57.89	10.53	2	100.00%	0.7	1	0.00%	0.3
Lone Druid	13	26.53%	56.84	74.74	6	33.33%	2.0	7	57.14%	1.8
Razor	15	30.61%	55.79	84.21	5	40.00%	1.7	10	40.00%	2.5
Bane	6	12.24%	54.74	54.74	6	50.00%	2.0	0	0.00%	0.0
Earth Spirit	3	6.12%	53.68	17.89	3	66.67%	1.0	0	0.00%	0.0
Broodmother	8	16.33%	52.63	63.16	3	33.33%	1.0	5	60.00%	1.3
Warlock	7	14.29%	51.58	66.32	7	42.86%	2.3	0	0.00%	0.0
Earthshaker	23	46.94%	50.53	100.00	16	25.00%	5.3	7	28.57%	1.8
Anti-Mage	4	8.16%	49.47	21.05	1	100.00%	0.3	3	33.33%	0.8
Juggernaut	6	12.24%	48.42	58.95	3	33.33%	1.0	3	66.67%	0.8
Invoker	10	20.41%	47.37	82.11	5	20.00%	1.7	5	60.00%	1.3
Omniknight	3	6.12%	46.32	18.95	2	50.00%	0.7	1	100.00%	0.3
Sven	5	10.20%	45.26	53.68	4	50.00%	1.3	1	0.00%	0.3
Slardar	9	18.37%	44.21	78.95	6	33.33%	2.0	3	33.33%	0.8
Mirana	1	2.04%	43.16	6.32	1	100.00%	0.3	0	0.00%	0.0
Wraith King	1	2.04%	43.16	6.32	1	100.00%	0.3	0	0.00%	0.0
Phantom Lancer	1	2.04%	43.16	6.32	1	100.00%	0.3	0	0.00%	0.0
Axe	1	2.04%	43.16	6.32	1	100.00%	0.3	0	0.00%	0.0
Pugna	4	8.16%	38.95	45.26	3	33.33%	1.0	1	100.00%	0.3
Lich	2	4.08%	37.89	11.58	1	100.00%	0.3	1	0.00%	0.3
Enigma	6	12.24%	36.84	68.42	3	33.33%	1.0	3	33.33%	0.8
Huskar	3	6.12%	35.79	22.11	1	100.00%	0.3	2	0.00%	0.5
Enchantress	4	8.16%	34.74	42.11	1	0.00%	0.3	3	66.67%	0.8
Meepo	1	2.04%	33.68	1.05	0	0.00%	0.0	1	100.00%	0.3
Spectre	1	2.04%	33.68	9.47	0	0.00%	0.0	1	100.00%	0.3
Naga Siren	1	2.04%	33.68	9.47	0	0.00%	0.0	1	100.00%	0.3
Doom	4	8.16%	30.53	56.84	2	0.00%	0.7	2	100.00%	0.5
Clinkz	5	10.20%	29.47	65.26	2	50.00%	0.7	3	0.00%	0.8
Witch Doctor	3	6.12%	28.42	51.58	3	33.33%	1.0	0	0.00%	0.0
Dazzle	3	6.12%	28.42	51.58	3	33.33%	1.0	0	0.00%	0.0
Slark	3	6.12%	28.42	51.58	3	33.33%	1.0	0	0.00%	0.0
Storm Spirit	3	6.12%	28.42	51.58	3	33.33%	1.0	0	0.00%	0.0
Viper	3	6.12%	28.42	51.58	3	33.33%	1.0	0	0.00%	0.0
Phantom Assassin	4	8.16%	23.16	69.47	4	25.00%	1.3	0	0.00%	0.0
Shadow Shaman	2	4.08%	22.11	24.21	1	0.00%	0.3	1	100.00%	0.3
Terrorblade	2	4.08%	22.11	24.21	1	0.00%	0.3	1	100.00%	0.3
Abaddon	3	6.12%	20.00	62.11	2	0.00%	0.7	1	100.00%	0.3
Tusk	3	6.12%	20.00	62.11	2	0.00%	0.7	1	100.00%	0.3
Sniper	5	10.20%	17.89	93.68	1	0.00%	0.3	4	0.00%	1.0
Medusa	1	2.04%	16.84	40.00	1	0.00%	0.3	0	0.00%	0.0
Luna	1	2.04%	16.84	40.00	1	0.00%	0.3	0	0.00%	0.0
Ogre Magi	1	2.04%	16.84	40.00	1	0.00%	0.3	0	0.00%	0.0
Kunkka	1	2.04%	16.84	40.00	1	0.00%	0.3	0	0.00%	0.0
Keeper of the Light	1	2.04%	16.84	40.00	1	0.00%	0.3	0	0.00%	0.0
Windranger	1	2.04%	16.84	40.00	1	0.00%	0.3	0	0.00%	0.0
Ursa	3	6.12%	10.53	76.84	2	0.00%	0.7	1	0.00%	0.3
Leshrac	1	2.04%	9.47	40.00	1	0.00%	0.3	0	0.00%	0.0
Gyrocopter	1	2.04%	9.47	40.00	1	0.00%	0.3	0	0.00%	0.0
Pudge	1	2.04%	9.47	40.00	1	0.00%	0.3	0	0.00%	0.0
Chen	1	2.04%	9.47	40.00	1	0.00%	0.3	0	0.00%	0.0
Timbersaw	4	8.16%	5.26	94.74	3	0.00%	1.0	1	0.00%	0.3
Phoenix	1	2.04%	4.21	40.00	1	0.00%	0.3	0	0.00%	0.0
Death Prophet	1	2.04%	3.16	20.00	0	0.00%	0.0	1	0.00%	0.3
Bloodseeker	1	2.04%	2.11	40.00	1	0.00%	0.3	0	0.00%	0.0
Drow Ranger	6	12.24%	1.05	100.00	1	0.00%	0.3	5	0.00%	1.3